7.5" Adams Arms 5.45x39mm
I was considering the KXs as well as just about every other linear comp / shield / muzzle device that was designed to reduce or redirect the blast & sound away from me. The upper was shipped with an A2 but after the 1st range trip to my local indoor range I needed to change. I decided to try the
STD - mostly because of reviews & suggestions on here as well everything I could find & read online was positive. Plus the size was minimal & the cost was ideal so I decided to try it figuring it could always be an interim device until I settled on spending more on something more expensive like the KXx or ferfrans.
I love it. Slightly smaller than the A2 & works better than expected. Also for my build its great to go along with the Adams Arms piston setup. Knurling matches & it is small enough not to be in the way at all when I strip & pull out the piston components.
I went with the 7.5 just because I figured if under 8" was good enough for the Ruskies & the AKS-74U then it should be fine by me. But mostly I just wanted this build to be completely bad ass & fun. Figured at the time I would be using some big/long muzzle device anyway so might as well get it as short as practical.